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Re: Measuring k
From: Julian Green[SMTP:julian-at-kbss.bt.co.uk]
Sent: Tuesday, September 16, 1997 12:04 PM
To: tesla-at-pupman-dot-com
Subject: Measuring k
I don't have a inductance meter, but I do have a scope and
I have recently been examining waveforms of my coil running
under various conditions. (I hope to provide pictures of
scope traces if anyone is interested).
>From the scope trace I can see the point that the spark gap
quenches and also determine k.
Please correct me if I'm wrong:
Spark gap quenches when the lobes finish and smooth decay
envelope starts.
k can be measured by counting the number of cycles to achieve
maximum potential (on my coil this is 3 indicating a coupling
of 0.33)
Julian Green